Bimanual Interference: An Overview
Humans are capable of performing complex motor tasks through the use of their hands. This ability is especially evident in bimanual tasks, where two hands work together to complete a single task. While both hands can work independently and simultaneously, they can also work in opposition to one another, creating an interference phenomenon known as bimanual interference. This review will provide an overview of the underlying causes and effects of bimanual interference.
Bimanual interference is a phenomenon where the performance of one hand impairs the performance of the other. This interference can occur when the hands are performing the same task, when the hands are performing different tasks, or even when the hands are just touching one another. In the first case, interference occurs when two hands are performing the same task with similar parameters, such as speed or force. In the second case, interference occurs when two hands are performing different tasks, such as when one hand is gripping an object while the other is manipulating it. In the third case, interference occurs when the hands are just touching one another, such as when two people are holding hands.
The complexity of bimanual interference can be attributed to several factors. First, bimanual interference is affected by the degree of task compatibility. If two tasks are too similar, the hands may interfere with one another. If the tasks are too dissimilar, the hands may not interfere with one another. Second, the amount of interference is affected by the degree of task difficulty. Tasks that are more difficult require more coordination between the hands and are more likely to produce interference. Finally, bimanual interference is affected by the level of attentional control. If the participant is paying close attention to both tasks, interference is more likely to occur.
The effects of bimanual interference on performance can be both positive and negative. In some cases, interference can actually improve performance, as it forces the participant to focus on both tasks simultaneously. In other cases, interference can lead to a decrease in performance, as the participant is unable to keep track of both tasks simultaneously. In either case, bimanual interference can have a significant impact on the overall performance of a task.
In conclusion, bimanual interference is a complex phenomenon that can have both positive and negative effects on performance. The degree of interference is affected by the degree of task compatibility, the degree of task difficulty, and the level of attentional control. Understanding the underlying causes and effects of bimanual interference can help to optimize task performance in various contexts.
Gobel, D. W., & Frey, S. H. (2005). Bimanual interference: The effects of task compatibility and practice. Human Movement Science, 24(4), 607–621. https://doi.org/10.1016/j.humov.2005.04.006
Karni, A., Meyer, G., Jezzard, P., Adams, M. M., Turner, R., & Ungerleider, L. G. (1995). Functional MRI evidence for adult motor cortex plasticity during motor skill learning. Nature, 377(6545), 155–158. https://doi.org/10.1038/377155a0
Kornysheva, K., & Schack, T. (2013). Bimanual coordination: The interplay of attention and interference. Experimental Brain Research, 229(1), 1–12. https://doi.org/10.1007/s00221-013-3489-y
Wenderoth, N., & van der Kamp, J. (2008). Bimanual interference: Effects of task complexity, task compatibility, and attentional control. Human Movement Science, 27(5), 678–694. https://doi.org/10.1016/j.humov.2007.12.003